Could not sleep and got out of bed with the house cold and loaded a bunch of small round of maple from Irene not a friend but the hurricane LOL full secondaries stove 500+ flue probe 500 all is good go figure.. I have come to the conclusion an epa rating of btu output is rather silly as this is making great heat with trash wood and it is more a matter of how the fire is treated and i am not a master at all but slowly learning about an epa stove. Busy making a big bed of coals rather than a long burn so plenty warm in the am.